Merge pull request #41157 from dotnet/dependabot/nuget/samples/snippets/csharp/xunit-test/xunit-2.8.1

Bump xunit from 2.8.0 to 2.8.1 in /samples/snippets/csharp/xunit-test

Author: github-actions[bot]

samples/snippets/csharp/xunit-test/xunit-test.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="xunit" Version="2.8.0" />
+    <PackageReference Include="xunit" Version="2.8.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.0" />
   </ItemGroup>